Configuration Properties Profiles Kotlin Safe

Source mapping: Tier 2 high-value skill derived from Kotlin_Spring_Developer_Pipeline.md (SK-16).

Mission

Make configuration predictable across local, test, staging, and production environments. Treat configuration as typed application input, not as unstructured text.

Read First

• application.yml, application.properties, and profile-specific files.
• @ConfigurationProperties classes and how they are registered.
• Environment variable names, Helm values, Config Server or Vault usage, and test overrides.
• Active profile configuration and profile groups.
• Any custom converters, property placeholders, or late-bound secret conventions.

Diagnose In This Order